• Symplocos N.J. Jacquin, 1760
• Symplocos bakeri
• Symplocos lanata Krug & Urban
• Symplocos latifolia Krug & Urban
• Symplocos martinicensis Jacq.
• Symplocos micrantha Krug & Urban
• Symplocos polyantha Krug & Urban accepted as Symplocos micrantha Krug & Urban
• Symplocos tinctoria (L.) L'Hér.
• Symplocospollenites R. Potonié, P.W. Thomson & F. Thiergart ex R. Potonié, 1960 †
• Symplocostoma Bastian, 1865
• Symplocostoma acuta Cobb, 1920
• Symplocostoma acutum (Cobb, 1920)
• Symplocostoma agile Marion, 1870 accepted as Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma antarcticum (uncertain > taxon inquirendum)
• Symplocostoma bandaense
• Symplocostoma bierstedti Marion, 1870 accepted as Symplocostoma exile Marion, 1870
• Symplocostoma brevispiculum Jensen, 1986
• Symplocostoma caecum Schulz, 1932 accepted as Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma dissoluta
• Symplocostoma dissolutum
• Symplocostoma dubium
• Symplocostoma exile Marion, 1870 (uncertain > taxon inquirendum)
• Symplocostoma exilis Marion, 1870
• Symplocostoma filicauda Schuurmans Stekhoven, 1950
• Symplocostoma formosum Schulz, 1931 accepted as Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma hexabulba Filipjev, 1918 accepted as Polygastrophora hexabulba (Filipjev, 1918)
• Symplocostoma johnstoni Mawson, 1953
• Symplocostoma karense Filipjev, 1927
• Symplocostoma lacustre Daday, 1894
• Symplocostoma leptocephalum
• Symplocostoma leptolaimus Filipjev, 1927
• Symplocostoma longicauda Allgén, 1933 accepted as Calyptronema longicauda
• Symplocostoma longicolle Bastian, 1865 accepted as Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma longicollis Bastian, 1865 accepted as Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma longiseta Micoletzky, 1930 accepted as Ledovitia longiseta (Micoletzky, 1930)
• Symplocostoma majus Filipjev, 1927
• Symplocostoma marioni Filipjev, 1918 accepted as Calyptronema acuminatum (Eberth, 1863)
• Symplocostoma medium Filipjev, 1927
• Symplocostoma murmanicum Ssaweljev, 1912
• Symplocostoma obtusidens Stekhoven, 1956 accepted as Ledovitia obtusidens (Schuurmans Stekhoven, 1956)
• Symplocostoma papillatum Kreis, 1928
• Symplocostoma paramajus
• Symplocostoma paratenuicolle
• Symplocostoma ponticum Filipjev, 1918
• Symplocostoma profundum Micoletzky, 1930 accepted as Ledovitia profunda Micoletzky, 1930
• Symplocostoma reisingeri Ditlevsen, 1928
• Symplocostoma sabulicola Filipjev, 1918 accepted as Catalaimus sabulicola (Filipjev, 1918)
• Symplocostoma tenuicolle (Eberth, 1863)
• Symplocostoma trichostoma Coles, 1977
• Symplocostoma viviparum Bastian, 1865 accepted as Anoplostoma viviparum (Bastian, 1865)
• Symplocostomatidae Filipjev, 1918 accepted as Enchelidiidae Filipjev, 1918
• Symplocostomella Micoletzky in Kreis, 1930
• Symplocostomella cavicaudata Schuurmans Stekhoven, 1946
• Symplocostomella filicauda Schuurmans Stekhoven, 1950
• Symplocostomella javaensis
• Symplocostomella johnstoni Mawson, 1953 accepted as Symplocostoma johnstoni Mawson, 1953
• Symplocostomella mediterranea Schuurmans Stekhoven, 1950
• Symplocostomella trichostoma Coles, 1977